40312973 has 4 divisors (see below), whose sum is σ = 41250528. Its totient is φ = 39375420.

The previous prime is 40312969. The next prime is 40313011. The reversal of 40312973 is 37921304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40312973 - 2² = 40312969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468713 + ... + 468798.

It is an arithmetic number, because the mean of its divisors is an integer number (10312632).

Almost surely, 2^40312973 is an apocalyptic number.

40312973 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40312973 is a deficient number, since it is larger than the sum of its proper divisors (937555).

40312973 is an equidigital number, since it uses as much as digits as its factorization.

40312973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937554.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 40312973 is about 6349.2497982045. The cubic root of 40312973 is about 342.8848335687.

The spelling of 40312973 in words is "forty million, three hundred twelve thousand, nine hundred seventy-three".